ࡱ> >@=q` RjbjbjqPqP2,::j, *$ $h#6 6 K      ԛ.a0(( h TB  66  DHDH Title:Effect of YM529 on a model of mandibular invasion by oral squamous cell carcinoma in mice Author(s): HYPERLINK "http://wos15.isiknowledge.com/CIW.cgi?SID=Z4on8i3kAbOj6mcc521&Func=OneClickSearch&field=AU&val=Cui+NH&curr_doc=1/2&Form=FullRecordPage&doc=1/2" \o "one-click search" Cui NH,  HYPERLINK "http://wos15.isiknowledge.com/CIW.cgi?SID=Z4on8i3kAbOj6mcc521&Func=OneClickSearch&field=AU&val=Nomura+T&curr_doc=1/2&Form=FullRecordPage&doc=1/2" \o "one-click search" Nomura T,  HYPERLINK "http://wos15.isiknowledge.com/CIW.cgi?SID=Z4on8i3kAbOj6mcc521&Func=OneClickSearch&field=AU&val=Noma+H&curr_doc=1/2&Form=FullRecordPage&doc=1/2" \o "one-click search" Noma H,  HYPERLINK "http://wos15.isiknowledge.com/CIW.cgi?SID=Z4on8i3kAbOj6mcc521&Func=OneClickSearch&field=AU&val=Yokoo+K&curr_doc=1/2&Form=FullRecordPage&doc=1/2" \o "one-click search" Yokoo K,  HYPERLINK "http://wos15.isiknowledge.com/CIW.cgi?SID=Z4on8i3kAbOj6mcc521&Func=OneClickSearch&field=AU&val=Takagi+R&curr_doc=1/2&Form=FullRecordPage&doc=1/2" \o "one-click search" Takagi R,  HYPERLINK "http://wos15.isiknowledge.com/CIW.cgi?SID=Z4on8i3kAbOj6mcc521&Func=OneClickSearch&field=AU&val=Hashimoto+S&curr_doc=1/2&Form=FullRecordPage&doc=1/2" \o "one-click search" Hashimoto S,  HYPERLINK "http://wos15.isiknowledge.com/CIW.cgi?SID=Z4on8i3kAbOj6mcc521&Func=OneClickSearch&field=AU&val=Okamoto+M&curr_doc=1/2&Form=FullRecordPage&doc=1/2" \o "one-click search" Okamoto M,  HYPERLINK "http://wos15.isiknowledge.com/CIW.cgi?SID=Z4on8i3kAbOj6mcc521&Func=OneClickSearch&field=AU&val=Sato+M&curr_doc=1/2&Form=FullRecordPage&doc=1/2" \o "one-click search" Sato M,  HYPERLINK "http://wos15.isiknowledge.com/CIW.cgi?SID=Z4on8i3kAbOj6mcc521&Func=OneClickSearch&field=AU&val=Yu+GY&curr_doc=1/2&Form=FullRecordPage&doc=1/2" \o "one-click search" Yu GY,  HYPERLINK "http://wos15.isiknowledge.com/CIW.cgi?SID=Z4on8i3kAbOj6mcc521&Func=OneClickSearch&field=AU&val=Guo+CB&curr_doc=1/2&Form=FullRecordPage&doc=1/2" \o "one-click search" Guo CB,  HYPERLINK "http://wos15.isiknowledge.com/CIW.cgi?SID=Z4on8i3kAbOj6mcc521&Func=OneClickSearch&field=AU&val=Shibahala+T&curr_doc=1/2&Form=FullRecordPage&doc=1/2" \o "one-click search" Shibahala T Source:CLINICAL CANCER RESEARCH 11 (7): 2713-2719 APR 1 2005 Document Type:Article Language:English  HYPERLINK "http://wos15.isiknowledge.com/CIW.cgi?SID=Z4on8i3kAbOj6mcc521&Func=PagedCitedRefList&UT=000228320100035&doc=1/2&rec_id=143773616" Cited References: 31  HYPERLINK "http://wos15.isiknowledge.com/CIW.cgi?SID=Z4on8i3kAbOj6mcc521&Func=DispCitingRec&doc=1/2&isickref=143773616" Times Cited: 1 HYPERLINK "Cui%20NH2005.pdf" \t "_blank" INCLUDEPICTURE "http://images.isiknowledge.com/WoK3/Images/Links/WOK3/Generic_Src.gif" \* MERGEFORMATINET  Abstract:Purpose: This study examined the mechanisms of osteoclast-mediated bone invasion in a model of oral squamous cell carcinoma (OSCC), C3H/HeN mice were inoculated with SCC VII cells into the masseter region to establish an animal model of mandibular invasion by OSCC. Experimental Design: The mice were divided into three groups: a control group, given daily s.c. injections of saline; group 1, given 2 mu g per mouse per day of the bisphosphonate YM529; and group 2, given 10 mu g per mouse per day of YM529. After 3 weeks of treatment, the lesions were studied by micro-computed tomography. After tartrate-resistant acid phosphatase (TRAP) staining, the osteoclasts were easily identified, and the percentages of the area occupied by osteoclasts were calculated by computer for each sample. The tumors were analyzed by RT-PCR to determine the mRNA expression of interleukin-6 (IL-6), parathyroid hormone-related protein (PTHrP), tumor necrosis factor-alpha (TNF-alpha), receptor activator of nuclear factor-kappa B (RANK), RANK ligand (RANKL), and osteoprotegerin. Results: SCC VII cells rapidly multiplied in the masseter muscle of the mice. Bone invasion was evident only in the control group on micro-computed tomography. On TRAP-stained slices, the percentages of osteoclasts in groups 1 and 2 were significantly lower than that in the control group. The mRNA expressions of IL-6, PTHrPTHF-alpha, and RANK decreased as the concentration of YM529 increased. Conclusions: We conclude that various cancer-derived cytokines play important roles in the invasion of bone by OSCC. YM529, a third-generation bisphosphonate, can suppress osteoclast-mediated bone invasion by OSCC. The mechanism of this effect might involve inhibition of cytokines such as IL-6, PTHrP,TNF-alpha, and RANK by YM529. KeyWords Plus:RESISTANT ACID-PHOSPHATASE; EXPERIMENTAL BONE METASTASIS; LUNG-CANCER CELLS; MINODRONATE YM529; IN-VITRO; BISPHOSPHONATE; TUMOR; RESORPTION; OSTEOPROTEGERIN; OSTEOCLASTS Addresses:Nomura T (reprint author), Tokyo Dent Coll, Dept Oral & Maxillofacial Surg 1, Mihama Ku, 1-2-2 Massago, Chiba, 2618502 Japan Tokyo Dent Coll, Dept Oral & Maxillofacial Surg 1, Mihama Ku, Chiba, 2618502 Japan Peking Univ, Stomatol Sch, Dept Oral & Maxillofacial Surg 1, Beijing, 100871 Peoples R China Tokyo Dent Coll, Dept Pathol, Chiba, Japan Univ Tokushima, Dept Oral & Maxillofacial Surg 2, Tokushima, 770 Japan E-mail Addresses: HYPERLINK "mailto:tanomura@tdc.ac.jp" tanomura@tdc.ac.jp Publisher:AMER ASSOC CANCER RESEARCH, 615 CHESTNUT ST, 17TH FLOOR, PHILADELPHIA, PA 19106-4404 USA Subject Category:ONCOLOGY IDS Number:915QX ISSN:1078-0432 `blmn ! 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